The Dell
E-Port enables you to
connect your laptop computer to the following external devices: Docking connector:

Connects
a laptop to the E-Port

RJ-45
network
connector:

Connects
a network interface cable

USB
2.0 connectors: Connect
up to five USB 2.0 compliant
devices, such as a USB mouse. Three USB connectors are on the left
side, and
two USB connectors are on the back of this Dell PR02X Docking Station